First I tried Connecting NI-SCX1-1000 to labview. Seems this component has been discontinued and there are hence several issues connecting with labview. Bascially, I could't figure it out and I gave up very quickly.

Next, I connected the PD to Moku. 

PD output range is 0-10V. Moku input range is ±25V. It seems for most of PD interfacing, its better and simpler to use Moku. 

I installed Moku drivers to be used in Labview. Moku is now available in "Functions/Liquid Instruments Moku" during VI development.

Moku is connected to Labview using usb connections as mentioned in the  liquid instrument instructions page

On a side not, Moku has two applications, "Waveform Generator" and "Arbitrary Waveform Generator". The former one can generate signal upto ±5V and 20MHz(moku specs), whereras the latter one only can generate upto ±2.5V and 10MHz(much lower than specs). Its better to use "Waveform generator" to be able to easily meet specs.